Rename FX_SAFE_DWORD to FX_SAFE_UINT32

core/fpdfapi/fpdf_parser/cpdf_data_avail.cpp

 // Copyright 2016 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "core/fpdfapi/fpdf_parser/include/ipdf_data_avail.h"
 
 #include "core/fpdfapi/fpdf_parser/cpdf_data_avail.h"
 #include "core/fpdfapi/fpdf_parser/fpdf_parser_utility.h"
@@ skipping 1489 matching lines @@
   m_pDocument->LoadPages();
   return FALSE;
 }
 
 IPDF_DataAvail::DocAvailStatus CPDF_DataAvail::CheckLinearizedData(
     IPDF_DataAvail::DownloadHints* pHints) {
   if (m_bLinearedDataOK)
     return DataAvailable;
 
   if (!m_bMainXRefLoadTried) {
-    FX_SAFE_DWORD data_size = m_dwFileLen;
+    FX_SAFE_UINT32 data_size = m_dwFileLen;
     data_size -= m_dwLastXRefOffset;
     if (!data_size.IsValid())
       return DataError;
 
     if (!m_pFileAvail->IsDataAvail(m_dwLastXRefOffset,
                                    data_size.ValueOrDie())) {
       pHints->AddSegment(m_dwLastXRefOffset, data_size.ValueOrDie());
       return DataNotAvailable;
     }
 
@@ skipping 314 matching lines @@
   return FormAvailable;
 }
 
 CPDF_DataAvail::PageNode::PageNode() : m_type(PDF_PAGENODE_UNKNOWN) {}
 
 CPDF_DataAvail::PageNode::~PageNode() {
   for (int32_t i = 0; i < m_childNode.GetSize(); ++i)
     delete m_childNode[i];
   m_childNode.RemoveAll();
 }